最佳回答取４０分：糖是最甜的物質嗎？

No.

http://chemistry.about.com/cs/5/f/bl031504a.htm
see this, if we set sugar as 1, then the following compound would be:

D-Glucose (natural sugar produced by plants) - 0.46
Lactose (natural sugar found in milk) - 0.68
D-Fructose (a natural fruit sugar) - 0.84
Sucrose - 1
Cyclamate - 30
Aspartame (Nutrasweet, Equal) - 200
Saccharin (benzosulfamide) - 300
Sucralose - 650
Alitame - 2,000
Thaumatin - 3,000
Carrelame (guanidine sweetener) - 160,000
Bernardame (guanidine sweetener) - 200,000
Sucrononate (guanidine sweetener) - 200,000
Lugduname (guanidine sweetener) - 220,000

Other publications may provide different values. The guanidine sweeteners are not expected to be used in foods. Also, sweetness is only aspect of a compound's taste and potential use as a sweetener. These compounds exhibit different levels of toxicity, aftertaste, bitterness, etc.

no, 糖 is not the sweetest.

不是！糖不是最甜的物質